YOU SAID:
Mary knows her boyfriend uncle and she doesn't really like him because of his ugly face
INTO JAPANESE
メアリーは彼女のボーイフレンドの叔父を知っていて、彼のい顔のために彼は本当に彼を好きではありません
BACK INTO ENGLISH
Mary knows her boyfriend's uncle and he doesn't really like him for his terrible face
INTO JAPANESE
メアリーは彼女のボーイフレンドの叔父を知っていて、彼はひどい顔で彼を本当に好きではありません
BACK INTO ENGLISH
Mary knows her boyfriend's uncle and he doesn't really like him with a terrible face
INTO JAPANESE
メアリーは彼女のボーイフレンドの叔父を知っていて、彼はひどい顔で彼を本当に好きではありません
BACK INTO ENGLISH
Mary knows her boyfriend's uncle and he doesn't really like him with a terrible face
That didn't even make that much sense in English.